單項(xiàng)選擇題

【A1型題】診斷呼吸衰竭的血?dú)鈽?biāo)準(zhǔn)是()

A.PaO2<65mmHg和(或)伴有PaCO2>55mmHg
B.PaO2<50mmHg和(或)伴有PaCO2>60mmHg
C.PaO2<60mmHg和(或)伴有PaCO2>55mmHg
D.PaO2<60mmHg和(或)伴有PaCO2>50mmHg
E.PaO2<65mmHg和(或)伴有PaCO2>50mmHg

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